Re: [ADSM-L] DEVCLASS=FILE - what am I missing
2015-02-15 08:52:46
Rumour has it that there is a dedupicable (is that a word?) DISK devclass
coming up in one of this year's TSM releases - if it makes it through the beta.
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Nick Laflamme
Sent: Friday, February 13, 2015 7:37 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] DEVCLASS=FILE - what am I missing
FILE allows deduplication; DISK doesn't.
My impression after some experimenting is that FILE wasn't meant to replace
DISK; it was solely meant to replace tape device classes. We didn't need to, so
those experiments quietly ended.
On Fri, Feb 13, 2015 at 12:30 PM, Zoltan Forray <zforray AT vcu DOT edu> wrote:
> WOW - I didn't realize that. Thanks for pointing that out.
>
> Won't automatically go to nextstgpool, didn't automatically reclaim?
> So, what is the advantage/benefit of DEVCLASS=FILE? Sounds like time
> to go back to DEVCLASS=DISK
>
> On Fri, Feb 13, 2015 at 1:22 PM, Paul Zarnowski <psz1 AT cornell DOT edu>
> wrote:
>
> > At 12:12 PM 2/13/2015, Zoltan Forray wrote:
> > >Well, last night became a disaster. Backups failing all over
> > >because it couldn't allocate any more files and also would not
> > >automatically shift
> to
> > >use the "nextpool" which is defined as a tape pool.
> >
> > Alas, TSM doesn't automatically "roll over" when the ingest pool in FILE.
> > I really wish that it did. Here's the relevant documentation for
> > NEXTSTG for FILE stgpools:
> >
> > > When there is insufficient space available in the current
> > > storage
> > pool, the NEXTSTGPOOL parameter for sequential access storage pools
> does
> > not allow data to be stored into the next pool. In this case, the
> server
> > issues a message and the transaction fails.
> >
> > ..Paul
> >
> >
> > --
> > Paul Zarnowski Ph: 607-255-4757
> > Assistant Director for Storage Services Fx: 607-255-8521
> > IT at Cornell / Infrastructure Em: psz1 AT cornell DOT edu
> > 719 Rhodes Hall, Ithaca, NY 14853-3801
> >
>
>
>
> --
> *Zoltan Forray*
> TSM Software & Hardware Administrator
> BigBro / Hobbit / Xymon Administrator
> Virginia Commonwealth University
> UCC/Office of Technology Services
> zforray AT vcu DOT edu - 804-828-4807
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